wheel MERCEDES-BENZ S CLASS 2017 Owner's Guide

If a locked door is opened from the inside, the
previous unlock status of the vehicle will be
taken into consideration if: R
the vehicle was locked using the locking but-
ton for the central locking, or R
if the vehicle was locked automatically
The vehicle will be fully unlocked if it had previ-
ously been fully unlocked. If only the driver's
door had been previously unlocked, only the
door which has been opened from the inside is
unlocked.
Automatic locking feature
X
To deactivate: press and hold button C for
approximately five seconds until a tone
sounds. X
To activate: press and hold button D for
approximately five seconds until a tone
sounds.
If you press one of the two buttons and do not
hear a tone, the relevant setting has already
been selected.
The vehicle is locked automatically when the
ignition is switched on and the wheels are turn-
ing.
You could therefore be locked out if: R
the vehicle is being pushed. R
the vehicle is being towed. R
the vehicle is on a roller dynamometer.
You can activate and deactivate the automatic
locking mechanism via the multimedia system
(see the Digital Operator's Manual). Power closing Power closing pulls the doors and trunk lid into
their locks automatically even if they are only
partly closed. X
To power close a door: push the door into
the lock up to the first detent position.
Power closing will pull the door fully closed. X
To power close the trunk lid: lightly push
the trunk lid closed.
The power closing function pulls the trunk lid
closed.
Locking/unlocking the driver's door
with the mechanical key
i If you want to centrally lock the vehicle using
the mechanical key, begin by pressing the
locking button for the interior locking mech-
anism while the driver's door is open. Then
lock the driver's door using the mechanical
key.
X
Insert the mechanical key as far as it will go
into opening C in the protective cap. X
Pull and hold the door handle. X
Pull the protective cap on the mechanical key
as straight as possible away from the vehicle
until it releases. X
Release the door handle.84
Doors
Opening and closing

Correct driver's seat position
G WARNING
You could lose control of your vehicle if you do
the following while driving: R
adjust the driver's seat, head restraint,
steering wheel or mirrors R
fasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint, steer-
ing wheel and mirror and fasten your seat belt
before starting the engine.
Observe the following when adjusting steering
wheel C , seat belt D and driver's seat

Always drive with the head restraints instal-
led. Before driving off, make sure for every
vehicle occupant that the center of the head
restraint supports the back of the head at
about eye level.
Do not rotate the head restraints of the front and
rear seats. Otherwise, you cannot adjust the
height and angle of the head restraints to the
correct position.
Using the fore-and-aft adjustment, adjust the
head restraint so that it is as close as possible to
your head.
G WARNING
You could lose control of your vehicle if you do
the following while driving: R
adjust the driver's seat, head restraint,
steering wheel or mirrors R
fasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint, steer-
ing wheel and mirror and fasten your seat belt
before starting the engine.
G WARNING
If you adjust the seat height carelessly, you or
other vehicle occupants could be trapped and
thereby injured. Children in particular could
accidentally press the electrical seat adjust-
ment buttons and become trapped. There is a
risk of injury.
While moving the seats, make sure that your
hands or other body parts do not get under the
lever assembly of the seat adjustment sys-
tem.
G WARNING
The seat belt does not offer the intended level
of protection if you have not moved the back-
rest to an almost vertical position. When brak-
ing or in the event of an accident, you could
slide underneath the seat belt and sustain
abdomen or neck injuries, for example. This
poses an increased risk of injury or even fatal
injury. Adjust the seat properly before beginning
your journey. Always ensure that the backrest
is in an almost vertical position and that the
shoulder section of your seat belt is routed
across the center of your shoulder.
! To avoid damage to the seats and the seat
heating, observe the following information: R
keep liquids from spilling on the seats. If
liquid is spilled on the seats, dry them as
soon as possible. R
if the seat covers are damp or wet, do not
switch on the seat heating. The seat heat-
ing should also not be used to dry the seats. R
clean the seat covers as recommended;
see "Interior care". R
do not transport heavy loads on the seats.
Do not place sharp objects on the seat
cushions, e.g. knives, nails or tools. The
seats should only be occupied by passen-
gers, if possible. R
when the seat heating is in operation, do
not cover the seats with insulating materi-
als, e.g. blankets, coats, bags, seat covers,
child seats or booster seats.
! Make sure that there are no objects in the
footwell under or behind the seats when mov-
ing the seats back. There is a risk that the
seats and/or the objects could be damaged.
Adjusting the seats
Vehicles with standard head restraints
or luxury head restraints
C
Head restraint height
D
Head restraint height

! Do not move the front-passenger seat fully
forwards if there are objects in the parcel net
in the front-passenger footwell. The objects
could otherwise be damaged.
Adjusting the front-passenger seat
The power supply or the ignition must be
switched on so that the front-passenger seat
can be selected ( Y
page 146).X
To select the front-passenger seat: press
button C repeatedly until the indicator lamp
in the button lights up.
When the indicator lamp in button C lights up,
for the front-passenger seat you can adjust: R
adjust the seat ( Y
page 101)R
seat heating ( Y
page 112)R
seat ventilation ( Y
page 113)R
the memory function to call up or save set-
tings ( Y
page 120).
Adjusting the front-passenger seat
from the rear
Important safety notes
G WARNING
Children could become trapped if they adjust
the seats, particularly when unattended.
There is a risk of injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
The seats can still be adjusted when the power
supply is switched off. G WARNING
When you adjust a seat, you or other vehicle
occupants could become trapped, e.g. on the
seat guide rail. There is a risk of injury.
Make sure when adjusting a seat that no one
has any body parts in the sweep of the seat.
Observe the safety notes on "Air bags"
( Y
page 48) and "Children in the vehicle"
( Y
page 59).
G WARNING
The front-air bags for could also injure the
vehicle occupants in the front If the front
seats are positioned too close to the dash-
board or steering wheel. This poses an
increased risk of injury or even fatal injury.
Always adjust the front seats so that they are
as far from the front air bags as possible. Also
observe the notes on the correct adjustment
of the seats.
! Do not move the front-passenger seat fully
forwards if there are objects in the parcel net
in the front-passenger footwell. The objects
could otherwise be damaged.
i You can use the rear-compartment override
button to disable the setting of the front-
passenger seat from the rear ( Y
page 65).
Adjusting the rear seat
C
Selects rear-compartment seat
D
Head restraint height

Adjusting fr om th e rear compar tm ent
You can use th e override butto n to disable this
function ( Y
page 65).
In order for th e front-passenger seat to be posi -
tione d in chauffeur mode:R
th e power suppl y or th e ignition must be
switched on ( Y
page 146)R
th e front-passenger seat may no t be occupiedR
th e front-passenger seat belt must no t be
inserted int o th e buckleX
To select th e fr ont-passenger seat : press
butto n C repeatedly until th e indicator lamp
in th e butto n lights up.
The front-passenger seat is selected if th e
indicator lamp in th e butto n lights up.X
Press butto n D forwards and hold it in this
position.
The seat moves forward.
The seat stops at th e threshold of th e area for
chauffeur mode. X
Releas e butto n D .X
Press and hold butto n D again until th e front-
passenger seat is in positio n for chauffeur
mode.
The head restraint on th e front-passenger
seat folds forward. The seat moves forward.
The To vie w the ext . mirror , adjust
front-passenger sea t or remove the
hea d restraint . message appear s in th e
multifunction display ( Y
page 256).
i If th e front-passenger seat is already at th e
threshold to th e area for th e chauffeur mode,
th e positio n for th e chauffeur mod e is set
immediately.
i The positio n for chauffeur mod e can be
saved or set usin g th e memory function of th e
rear seat ( Y
page 121). Fo r this th e indicator
lamp on butto n C must be lit . Adjusting fr om th e driver's seat
In order for th e front-passenger seat to be posi -
tione d in chauffeur mode: R
th e power suppl y or th e ignition must be
switched on ( Y
page 146) R
th e front-passenger seat may no t be occupiedR
th e front-passenger seat belt must no t be
inserted int o th e buckle X
To select th e fr ont-passenger seat : press
butto n C repeatedly until th e indicator lamp
in th e butto n lights up.
The front-passenger seat is selected if th e
indicator lamp in th e butto n lights up.X
Press butto n D forwards and hold it in this
position.
The seat moves forward.
The seat stops at th e threshold of th e area for
chauffeur mode. X
Releas e butto n D .X
Press and hold butto n D again until th e front-
passenger seat is in positio n for chauffeur
mode.
The head restraint on th e front-passenger
seat folds forward. The seat moves forward.
The To vie w the ext . mirror , adjust
front-passenger sea t or remove the
hea d restraint . message appear s in th e
multifunction display ( Y
page 256).
i If th e front-passenger seat is already at th e
threshold to th e area for th e chauffeur mode,
th e positio n for th e chauffeur mod e is set
immediately.
i The positio n for chauffeur mod e canno t be
store d or set wit h th e driver' s seat memory
function .Seats 107
Seats, steering wheel and mirrors Z

Adjust the driver's seat, head restraint, steer-
ing wheel and mirror and fasten your seat belt
before starting the engine.
G WARNING
If the head restraints are not installed or not
adjusted correctly, they cannot provide pro-
tection as intended. There is an increased risk
of injury in the head and neck area, e.g. in the
event of an accident or when braking.
Always drive with the head restraints instal-
led. Before driving off, make sure for every
vehicle occupant that the center of the head
restraint supports the back of the head at
about eye level.
Do not rotate the head restraints of the front and
rear seats. Otherwise, you cannot adjust the
height and angle of the head restraints to the
correct position.
Using the fore-and-aft adjustment, adjust the
head restraint so that it is as close as possible to
your head.
Pay attention to the important safety notes
( Y
page 100).
Adjusting the front head restraints
Adjusting the head restraints manually
With this function you can adjust the distance
between the head restraint and the back of the
seat occupant's head. X
To move forwards: pull the head restraint
forwards in the direction of the arrow until it
engages in the desired position. X
To move backwards: press and hold the
release catch C . X
Push the head restraint back. X
Release the release button once the head
restraint is in the desired position. X
Ensure that the head restraint is engaged.
Adjusting the luxury head restraint
mechanically X
To adjust the side bolsters of the head
restraint: push or pull right- and/or left-hand
side bolster C into the desired position. X
To adjust the fore-and-aft position for-
wards: pull the head restraint forwards in the
direction of arrow D until it engages in the
desired position. X
To adjust the fore-and-aft position back-
wards: press and hold release catch

X
To adjust the side bolsters of the head
restraint: push or pull right and/or left-hand
side bolster C into the desired position.
i The fore-and-aft position of the head
restraint is adjusted automatically when you
adjust the seat backrest angle using the seat
switch.
Adjusting the front head restraints elec-
trically The height and fore-and-aft position of the front
head restraints can be adjusted with the seat
adjustment switch ( Y
page 101).
Adjusting the rear seat head restraints Lowering the rear seat head restraints
electrically from the front
X
Switch on the power supply or the ignition
( Y
page 146). X
Briefly press button C .
The head restraints lower.
i If all of the rear seat head restraints are low-
ered and button C is pressed again, the outer
rear head restraints move into the last stored
position.
Extending the outer rear seat head
restraints from the front electrically
This function is available on vehicles with elec-
trically adjustable rear seats. X
Switch on the power supply or the ignition
( Y
page 146). X
Press and hold button C until the head
restraints have extended upwards. Extending the outer rear head restraints
into the last stored position This function is available on vehicles with elec-
trically adjustable rear seats. X
Switch on the power supply or the ignition
( Y
page 146). X
Briefly press button C .
The head restraints lower. X
Briefly press button C again.
The head restraints move to the last stored
position.
Adjusting the luxury head restraint in the
rear compartment mechanically
X
To adjust the side bolsters of the head
restraint: push or pull right and/or left-hand
side bolster C into the desired position. X
To adjust the angle of the head restraint:
push or pull the head restraint in the direction
of arrow D .
Adjusting the rear head restraints electri-
cally
The height and fore-and-aft position of the rear
head restraints can be adjusted with the seat
adjustment switch ( Y
page 102).
Supplementary cushion for luxury head
restraints
The supplementary cushion is available on vehi-
cles with electrically adjustable rear seats.
Only use the supplementary cushion when the
vehicle is stationary. Seats 111
Seats, steering wheel an d mirrors Z

The supplementary cushion is in the vehicle.
The supplementary cushion is attached to the
head restraint by three press studs.
Attaching the supplementary cushion: X
Position the head restraint as far forwards as
possible ( Y
page 102).X
Hold supplementary cushion D against the
head restraint and push press studs C into
the counterpieces.
Removing the supplementary cushion: X
Position the head restraint as far forwards as
possible ( Y
page 102).X
Release press studs C and remove supple-
mentary cushion D .
Adjusting the rear center head
restraints
Retracting and extending electrically
X
Press and hold button C until the head
restraint has fully extended or retracted. Folding into position mechanically X
Pull the head restraint up until it engages.
Adjusting the active multicontour
seat You can adjust the active multicontour seats for
the driver and front passenger via the multime-
dia system; see the Digital Operator's Manual.
The driving dynamics settings are only activated
if: R
the seat is occupied R
the seat belt is fastened
Adjusting the active multicontour
seat in the rear compartment You can adjust the multicontour seats for the
outer seats in the rear using the remote control;
see the Digital Operator's Manual.
Adjusting the 4-way lumbar support You can adjust the 4-way lumbar support via the
multimedia system (see the Digital Operator's
Manual).
Switching the seat heating on/off
Switching on/off
G WARNING
Repeatedly switching on the seat heating can
cause the seat cushion and backrest pads to
become very hot. The health of persons with112
Seats
Seats, steering wheel and mirrors

limited temperature sensitivity or a limited
ability to react to excessively high tempera-
tures may be affected or they may even suffer
burn-like injuries. There is a risk of injury.
Therefore, do not switch the seat heating on
repeatedly.
For vehicles equipped with the Warmth Comfort
package: the armrest in the door and the center
console can also be heated when you switch on
the seat heating of one of the front seats. You
can set this via the multimedia system; see the
Digital Operator's Manual.
The three red indicator lamps in the button indi-
cate the heating level you have selected.
The system automatically switches down from
level 3 to level 2 after approximately eight
minutes.
The system automatically switches down from
level 2 to level 1 after approximately ten
minutes.
The system automatically switches off approx-
imately 20 minutes after it is set to level 1 .
Vehicles with the Seat Heating Plus package:
you can set the distribution of the heated sec-
tions of the seat cushion and backrest via the
multimedia system; see the Digital Operator's
Manual.
Vehicles with a Rear Seat Entertainment System
and electric seat adjustment: you can set the
distribution of the heated sections of the seat
cushions and backrests on the rear seats via the
Rear Seat Entertainment System; see the Digital
Operator's Manual.
Front seats X
Switch on the power supply or the ignition
( Y
page 146). X
To switch on: press button C repeatedly
until the desired heating level is set. X
To switch off: press button C repeatedly
until all the indicator lamps go out.
i If the battery voltage is too low, the seat
heating may switch off.
Rear seats X
Switch on the power supply or the ignition
( Y
page 146). X
To switch on: press button C repeatedly
until the desired heating level is set. X
To switch off: press button C repeatedly
until all the indicator lamps go out.
i If the battery voltage is too low, the seat
heating may switch off.
Switching the seat ventilation on/off
Front seats
The three blue indicator lamps in the buttons
indicate the blower setting you have selected. Seats 113
Seats, steering wheel and mirrors Z

X
Switch on the power supply or the ignition
( Y
page 146).X
To switch on: press button C repeatedly
until the desired blower setting is set. X
To switch off: press button C repeatedly
until all the indicator lamps go out.
i If the battery voltage is too low, the seat
ventilation may switch off.
i You can open the side windows and the slid-
ing sunroof using the "Convenience opening"
feature ( Y
page 92). The seat ventilation of
the driver's seat automatically switches to the
highest level.
i When the vehicle is stationary, the fan
speed can be reduced automatically. This
reduces the noises of the seat ventilation.
Rear seat Switching the seat ventilation in the rear com-
partment on/off X
Switch on the power supply or the ignition
( Y
page 146). X
To switch on: press button C repeatedly
until the desired blower setting is set. X
To switch off: press button C repeatedly
until all the indicator lamps go out.
i If the battery voltage is too low, the seat
ventilation may switch off.
i When the vehicle is stationary, the fan
speed can be reduced automatically. This
reduces the noises of the seat ventilation.
Problems with the seat heating/ventilation Problem
Possible causes/consequences and P Solutions
The seat heating or seat
ventilation has switched
off prematurely or can-
not be switched on. The on-board voltage is too low because too many electrical consum-
ers are switched on. X
Switch off electrical consumers that you do not need, such as the
rear window defroster or interior lighting.
Once the battery is sufficiently charged, the seat heating or seat
ventilation can be switched back on manually.114
Seats
Seats, steering wheel and mirrors